List of available ServiceNow applications as of November 2019. Let me know in the comments if I missed any!
IT Service Management
Incident Management
Problem Management
Change Management
Release Management
Request Management
Procurement
Contract Management
Service Portal
Virtual Agent
Agent Chat
Predictive Intelligence
Performance Analytics
Walk-up Experience
Knowledge Management
Asset Management (Hardware)
Cost Management
Reports
Dashboards
Service Level Management
Configuration Management
Benchmarks
Surveys and Assessments
Continual Improvement Management
System Status
Outage Management
Major Incident Management
Now Mobile
Mobile Agent
Mobile Onboarding
Agent Workspace
Service Owner Workspace
Vendor Manager Workspace
Vendor Ticketing
Enterprise Onboarding and Transitions
Employee Service Center
Service Desk Call
Continual Improvement Management
IT Operations Management
ITOM Visibility
ITOM Health
ITOM Optimization
Discovery
Service Mapping
Event Management
Operational Intelligence
Cloud Management
Integration Hub / Orchestration
Data Certification
IT Business Management
Application Portfolio Management
Demand Management
Resource Management
Innovation Management
Scaled Agile Framework (SAFe)
Financial Planning
Project Portfolio Management
Agile Development
Test Management
Automated Test Framework
Financial Modeling
Financial Charging
Finance Close Automation
Investment Funding
Software Asset Management
Software Asset Management Foundation
Software Asset Management Premium
Security Operations
Security Incident Response
Vulnerability Response
Configuration Compliance
Threat Intelligence
Trusted Security Circles
Performance Analytics for Security Operations
Governance, Risk, and Compliance
Policy and Compliance Management
Risk Management
Audit Management
Vendor Risk Management
Advanced Risk
Use Case Accelerators
Performance Analytics for GRC
Customer Service Management
Customer Service Management
Agent Workspace
Case and Major Issue Management
Predictive Intelligence
Omni-Channel
Visual Workflow and Automation
Appointment Booking
Self Service
Virtual Agent
Field Service Management
Communities
Service Management for Issue Resolution
Proactive Customer Service Operations
Customer Service Management Mobile app
Customer Data Management
Visual Task Assignment
Self-Service
Surveys
Reports and Dashboards
Performance Analytics
Operations Management
Financial Modeling
Project Portfolio Management
HR Service Delivery
Case and Knowledge Management
Employee Service Center
Enterprise Onboarding and Transitions
Employee Document Management
Performance Analytics for HR Service Delivery
Virtual Agent
Predictive Intelligence
Service Management
Facilities Service Management
Finance Service Management
Marketing Service Management
Now Platform
Custom Applications
Automated Test Framework
Service Portal
Certified Applications
Integrations
Managed Documents
Anonymous Connect Support
CTI Softphone
Delegated Development
Team Development
Translations
Multi Provider SSO
IP Range Based Authentication
On Call Scheduling